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2. Luxfer Gas Cylinders, Riverside, CA. http://www.luxfercylinders.com/products/alternative-fuel/gstorh2.
3. AC Transit, Oakland, CA. http://www.actransit.org/wp-content/uploads/010912B_HyRoad_web2.pdf.
4. Onboard type IV compressed hydrogen storage systems—cost and performance status 2015;Ordaz,2015
5. Hydrogen storage cost analysis;James,2013